Iron-rolling mill



(No Model.)

W. G. HOWELL.

IRON RGLLING MILL.

Patented May 17, 1887.

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WILLIAM G. HOWELL, OF PHILADELPHIA, PENNSYLVANIA.

IRON-ROLLING MILL.

SPECIFICATION forming part of Letters Patent No. 363,293, dated May 17, 1887.

Application filed December 15, 1856. Serial No. 221,683. (No model.) i

To aZZ whom it may concern:

Be it known that I, WILLIAM G. HOWELL, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Iron Rolling Mills; and I do hereby declare the following to be a full, clear, and exact descrip tion of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in iron-rolling mills; and it consists in, first, the combination of two pairs of rolls which revolve in opposite directions, and which are placed upon opposite sides ofthe driving-wheels, with the driving-engine, which is placed centrally between the rolls 3 second, the combination of a series ofpairs of rolls revolving in one direction, a driving-engine for each four pairs of rolls, the driving-wheels which operate the rolls, and a corresponding series of rolls revolving in opposite directions and placed upon the other side of the driving wheels, all of which will be more fully describedhereinafter.

The object of my invention is to arrange a series of double roller-mills side by side, each mill being complete in itself, whereby a con tinuous set of rolls isformed, the number being only limited by the number of passes de sired. The rolls upon one side of the driving mechanism are driven in one direction and adapted to one kind of work, and the rolls upon the other side are driven in the opposite direction and adapted to another kind, or all of the rollers upon both sides are adapted to be used continuously upon the same work, as may be desired.

Figure 1 shows a plan view showing three roller-mills placed side by side to form a continuous train of rolls. Fig. 2 is a front elevation of the same.

A represents the first pair of rolls,which are driven by the shaft B, which is applied directly to the lower one of the pair, and which receives its motion from the driving-wheel O. The rolls A are geared together by suitable wheels, O,which cause them to revolve in op posite directions in the usual manner, The

driving-wheel G meshes with and is driven by the wheel D on the shaft E, to which the driving-engine is applied,which shaft may be provided with a balancewheel, F, to cause a more even and continuous motion than would be given by the engine if no balance-wheel were used. Also meshing with the wheel D is a second driving-WhcehG, which gives motion to the shaft H,which operates the lower one of a sec-,

ond pair of rolls, I,which are also geared together by wheels O,so as to revolvein opposite directions, and which rolls I are larger than the ones A, so as to have a faster motion, to make up for the lengthening of the bar which is being passed between the rolls A.

The shaft H extends through upon both sides of the wheel G, and gives motion to the upper one of a third pair of rolls, J, which are placed on a lower level than the rolls I. The shaft B also extends through upon the opposite side of the wheel 0 from the rolls A, and gives motion to the upper one of a fourth pair of rolls, L, which are placed on the same level as, but are larger than,the ones J, so as to travel a greater distance to make up for the lengthening of the bar that is being passed between the rolls J.

The shafts B H being connected to the lower ones of the rolls A I, and to the upper ones of the two pairsJ L upon the opposite side of the driving-wheels O G, the two pairs J L are placed on a lower level than the ones A I by the diameter of one of the rolls. gine which is to operate these four pairs of rolls is placed centrally between them, and drives the rolls A I in one direction and the rolls J L in the other. This driving-engine, the four pairs of rolls,and their driving mechanisms constitute a complete machine in itself, the rolls upon one side'being adapted to perform one kind of work, and the rolls upon the other side another kind; or the four pairs may be used continuously upon the same kind of work, as may be desired. The bar is started in through the rolls A, then passed through between the rolls I, then successively through the ones J L, and then again through the same rolls until the desired number of passes have been obtained.

By placing two or more of these complete machines in front of each other and at suitable distances apart, I get all the advantages of a continuous train of rolls without the complication hitherto connected with continuous trains. By attaching the two driving-shafts The driviug-ento the lower ones of the first two pairs of rolls,

and to the upper ones of the second two pairs of rolls, a reverse motion is'obtained, so that the iron which is being rolled is passed forward from A to I, or along the line of rolls A I, and

returns from the other end at a different elevation through the rolls J L, and finishes at the rolls parallel with the starting-rolls. machines are placed sufficiently far apart from each other to enable'the bar which is being rolled to pass entirely out of one before it enters another, enabling the bar to be given a quarterturn between the machines, which is necessary in most cases, except in rolling -flat bars. This does'away with the necessity for vertical rolls, as is the case in most continuous trains.

This invention can be used as one continuous train by starting at A and passing on and over to the other side and finishing at L; or the line A I may be used as one train and J L as another. By having each four pairs of rolls driven by a single engine there can be just a sufficient number of rolls brought into play to perform the kind of work that is desired. Where continuous trains have been formed heretofore it is necessary to run the entire machine, no matter whether all the rolls are required or not.

, .Having thus described my invention, I claim- I 1. In an iron-rolling mill, the combination of two pairs of rolls which are driven in the same direction, two pairs of rolls which are driven in the opposite direction, and the driving mechanism located centrally between the four pairs of rolls, substantially as shown.

The a 2. The combination of the rolls A I, the shafts B H, which are connected thereto, the driving-wheels O G, secured to the shafts, and the driving mechanism, with the two pairs of rolls J L, which are driven in an opposite direction from the ones A I, substantially as described.

3. In a rolling-mill, the combination of the two shafts B H, the two sets of rolls connected to opposite ends thereof and revolving in opposite directions, the driving-wheels connected to said shafts, a pinion placed between the wheels, so as to drive both shafts in the same direction, and a driving mechanism connected to the pinion, the shafts B H being made to extend beyond both sides of their drivingwheels and to operate pairs of rolls at both ends, substantially as set forth.

4. In a rolling-mill, the combination of the shaft to which the driving-power is applied, a driving-wheel applied thereto, the shaft which operates the rolls, and which is provided with a'gear-wheel tomesh with the wheel on the driving-shaft, the rolls secured to opposite ends of the roll or driven shaft, and the rolls which operate in connection with the rolls on the roll or driven shaft, and the wheels upon the rolls for causing them to revolve together, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM G. HOWELL Witnesses:

W; HOPKINS, I HENRY D. GERHARI). 

